From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5FBE6C10F0E for ; Fri, 12 Apr 2019 16:17:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3825520850 for ; Fri, 12 Apr 2019 16:17:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726998AbfDLQRe (ORCPT ); Fri, 12 Apr 2019 12:17:34 -0400 Received: from mout.kundenserver.de ([212.227.17.13]:48793 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726624AbfDLQRd (ORCPT ); Fri, 12 Apr 2019 12:17:33 -0400 Received: from [192.168.1.110] ([77.9.22.14]) by mrelayeu.kundenserver.de (mreue109 [212.227.15.183]) with ESMTPSA (Nemesis) id 1MlfCm-1gXMZn2zqc-00ihOT; Fri, 12 Apr 2019 18:16:25 +0200 Subject: Re: [PATCH v5 1/3] Provide in-kernel headers to make extending kernel easier To: Arnd Bergmann , Olof Johansson Cc: Joel Fernandes , Linux Kernel Mailing List , Qais Yousef , Dietmar Eggemann , Manoj Rao , Andrew Morton , Alexei Starovoitov , atish patra , Daniel Colascione , Dan Williams , Greg Kroah-Hartman , Guenter Roeck , Jonathan Corbet , Karim Yaghmour , Kees Cook , Android Kernel Team , "open list:DOCUMENTATION" , "open list:KERNEL SELFTEST FRAMEWORK" , linux-trace-devel@vger.kernel.org, Masahiro Yamada , Masami Hiramatsu , Randy Dunlap , Steven Rostedt , Shuah Khan , Yonghong Song References: <20190320163116.39275-1-joel@joelfernandes.org> <20190408203601.GF133872@google.com> From: "Enrico Weigelt, metux IT consult" Organization: metux IT consult Message-ID: <76db9a89-ae64-5c2b-6f56-3e2b860cbda2@metux.net> Date: Fri, 12 Apr 2019 18:16:19 +0200 User-Agent: Mozilla/5.0 (X11; Linux i686 on x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K1:dWetcqOfu10Yc5D6lS4VyXUoAG9WgPFH9RDc2jKVVoXU1gJ+5P8 MBaUYQMk6VlFIOTX0e6SXCElIpyN44mMd+I29mpzBfS6LbSHfTWfnB7qGSUSUuBVR4rMe57 QWuzRW7j5dqTuhLQCx26arGX5K1SMUU9Oz2FjxuaGwi/6H2M7Sz0s9O5ceQUkWAk9KU6B1w UPlGW6QzOWErJln+1NCWQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:OJXk5PcjVLo=:Uxwf6otcekeXPVs+AqoKvz Pp9R7ihPRH9mMxHeHvPc/aZjRKZObGTl9XqeYDcKq6UaZvkEPflpkLa8C/ZlquC7rwQcBuOHa ToAlT8d2/rREGxyUgEsknNhrt7h7/j+jKPJ29HZhs6Y1GnVj9IOFQJBF34xnGaKr/9vqe2GNH 8ZcBCBQwjLSPihKeyQul+1oYmG+bSNynkM+AWcVgH8zTmjFa5YDfOC4nIh9PoR1+rqd/YhYvP pwvUE4EJBYQnp+0Xr8ORNPrJiVXvYiaCcSkolVwgUelNBciiCufsF7cXUjKsx5snB8lYIHQWu ejbSFJsESeP0KuU28FEW0DL7kTEwO/9SaU0ELOZrZcGanpoBKY/FRY0GXDqoSebB30+lDfTwR ePqu38Q6Wh1WmLxRK/KzIkO06NtKc2M2fO3PLQD/Q/0TRvSk5b1WFT6ru8dRuX6Hsl2SiPRqz TW3XMQZuXbT9HrIUbItT0Y0Ycdcf6/y4xBDvrOMcGLhGcpeJq9uAKNHxxTEEe/Vnbc69gKyL5 8kw8BROHsT7Y8wAv/fdX3z4h2wtk5spgf3rNLlrnG2A7wb3nuESyGShC0nUIgRMKr6nRYCg6Y GmFTjTfQm/YbDhnY+5HPH2plCzT5cABosPO8933ojpdmJIVyLQmDOm4AfFCNIY+OY8KiulGpq mRppk0ftrChqqn3Vgy8yzAqWnGepGfvFN01x9HD6/8oyCTnpckK320HylHo/YJ45NflzH/GR6 XSgAtOX3hWAE1CjhHG6LOTdAyJbWTNEehAL1gmQhABLBhMKVtZ5Y/pNefdI= Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10.04.19 21:19, Arnd Bergmann wrote: > - we use cpio for initramfs because unpacking cpio in C code is > fairly simple, while unpacking tar is not (see the wikipedia page on tar). > If we were to unpack it from the kernel, the initramfs code could be > trivially reused. What about ar ? ;-) > - nobody sane uses cpio in user space, since tar is already present > almost everywhere, while cpio is rather obscure in comparison. So, rpm doesn't count as "sane" ? :o --mtx -- Enrico Weigelt, metux IT consult Free software and Linux embedded engineering info@metux.net -- +49-151-27565287